Angina - Background Flashcards
angina - ? pain with incr ? demand, usually upon ?, in presence of impaired ?
Causes of MIschaemia
- reduced perfusion - generalised ?, ?/infl of coronary aa, ?, embolus, ?
- reduced blood ? - ?, carboxyhaemoglobinaemia
- incr ? demands - incr ?, cardiac ?
episodic, myocardial, exercise, perfusion
hypotension, spasm, atheroma, thrombosis
oxygenation, anaemia
tissue, CO, hypertrophy
Stable angina - most commonly due to ? flow in ? coronary aa - studies show pts have ? of over 70% in a ? coronary aa
arteriosclerosis - NON-SPECIFIC ? and hardening of aa walls, lose ? and elasticity - and decr bl flow, often due to prolonged ? in smaller arteries
low
athersclerotic
stenosis
main
thickening
contractility
HTN
Atheroma (SPECIFIC)
- affecting ?/? sized aa
- this causes thick+hardening - called ? - which causes reduced ? perfusion, also predisposes to ? and ? formation
med/large atherosclerosis tissue thrombus aneurysm
Risk factors
? - rare in ? unless FH
? - higher in ? than pre-menopausal women
? - higher rates if ??? had IHD before ?
? - stopping reduces immediate risk by ?%
? - high ?, low fresh fruit and ? are implicated
? - worse if primarily abdominal
? - both systolic and diastolic
? - high serum ?, esp if high ???/TGs
?? - also impaired ? tolerance and impaired fasting ? associated
age, kids gender, men FH, first degree relative, 50 smx, 25% diet, fat, veg obesity HTN hyperlipid, chol, LDL DM, glucose, glucose